Improved scaffold-supporter



To all 'whom-t may conce-rn.'

dilated' gratta iiwi @inw DAVID B. HAY, OF DAYTON, OHIO.

LetteraPa-'tent No. 102,937, :lated May 10, 1870.

IMPRovEn scAr'roLD-sUPPoRa-ER.

The Sehedule referred to in these Letters Patent and making part of thesame.

Be it known that I, DAvIHD YB, HAY, of Dayton, in the county ofMontgomery and AState of Ohio, have `invented anImprovedScaffold-Support; and I do hereby declare that the following isa full, clear, and exact' description thereof. reference being had toythe annexed drawings making part of this specification, in which#- 4Figure 1- isa perspective vie-w. p

-Figure 2 is a vertical longitudinal Section. Fignre 3 is a perspectiveview, showing how the de vice may be nsed for -ra'isin,f 'ir or loweringa platform bodily.

Corresponding letters refer to correspondingr parts in the severalgures.

The nat-ure 4of my invention consists in providing a device forsupporting scaffolding, it being a band of metal, 'of a rectang'nlaivorother -suitable form, beveled from its ends toward the center, where itis provided with a wedge-shaped cross-bar, as hereinafter Amore fullysetforthi (lpo enable thcs'c skilled in the art to make and use myinvention, I will proceed to describe its construc- 1 tion andoperation,

A, in the drawings, represents a continuous band of metal, vwhich may beiliade of a rect-angular form, as-

shown, or any other suit-able shape. It is to be made vides the openinginto tivo equal spaces, ea'ch of which is to be ot' such dimensionsas'to be capable of re ceiving an ordinary upright used in` scaffolding.

This device may be used in the following manner:

Oneis slipped over each upright of a scaffold in such a manner that .thebase of the wedge-shaped cross-bar is onthe under side. It is apparentthat it will grasp such upright at any desired point where the platformis needed. This latter may then be formed by placing one end of aeross-beam upon the protruding part of the device, which, by reasoni'ofits curved or angled form, will incline toward the upright, and t-husprevent the beam from slipping olf, and extend the other end across tothe wall, where it may be supported in the usiial manner, and layingboards upon these beam's. To afford a more secure platform, the outerend of each beam may he secured in the protruding part of the device.

Having thus described my invention,

What I claim, and desire to secure by Letters Patent, is-' j The deviceherein described, substantially as and for the purpose set forth. i

In testimony whereof VI have signed my name to this specification in thepresence of'two subscribing witnesses. A

l D. B. HAY.

Witnesses:

JAMES KELLY, BENJAMIN Bns'r.

